Isaac Asimov for sure.
For years he wrote a monthly science column in The Magazine of Fantasy and Science Fiction and as a kid I couldn't get enough.
I still cherish his column on how to pronounce long chemical names.
The example he used was paradymethylaminobenzaldehyde. Easy once you learn to speak it using the cadance of the jig "The Irish Washerwoman."
To this day I cannot hear this tune without singing along Para........
Talk about fixation!
Mark